Centuries-old trees can hold clues about global weather patterns. A new UA study unlocked some of those clues.

A potentially massive earthquake in the Pacific Northwest, termed "the big one," could actually set off an even larger ...

A La Nina has formed, normally signally a cold and wet winter, but a mass of warm water off the West Coast could blunt its ...

Remnants of Hurricane Priscilla will bring rain to SoCal with more widespread rain possible due to a NorCal storm by mid October ...

Search-and-rescue teams, with dogs in tow, were deployed across the blackened ruins of southern Oregon towns on Sunday as smoldering wildfires still ravaged U.S. Pacific Coast states after causing ...

Flash flooding is a growing risk in the southwestern U.S. through this weekend. The reason is a tropical storm headed inland ...

Planting wheat earlier in the spring to avoid crop damage from ever-hotter summers may not keep harvests on pace with current ...

Beyond disrupting the ocean’s food web and fisheries, the underwater heat wave, known as "The Blob," can alter weather on ...

Tropical Storm Priscilla was centered about 165 miles (265 kilometers) west-southwest of the southern part of Baja California ...

A marine heat wave spanning much of the North Pacific Ocean is already influencing weather in North America and is poised to make its mark on winter. But forecasters have another global weather ...

It might feel unseasonably hot where you are right now. That's thanks in part to a heat wave in the Pacific Ocean.

The hot, dry summers Clark County and much of the Pacific Northwest have experienced in recent years are harming some native tree species. Forestry experts and environmental groups say western hemlock ...